Ball-cock



UNITED STATES ATENT Erica.

WILLIAM LlLL, OF NEWTON, MASSACHUSETTS.

BALL-COCK.

SPECIFICATION forming part of Letters Patent No. 500,265, dated June 27,1893.

Application filed January 3, 1893.

To all whom it may concern.-

Be it known that I, WILLIAMF. LILL, a citizen of the United States,residing at Newton, in the county of Middlesex and State ofMassachusetts, have invented a new and useful Improvement in Ball-Cocks,of which the following is a full, clear, and exact description,reference being had to the accompanying drawings, forming a part of thisspecification, in explaining its nature.

The invention relates to a ball cock for service boxes of water closetsand similar uses, which is especially adapted for use Where. high waterpressures obtain.

It also relates to various features of organization and construction,whereby the friction upon the valve is so slight that comparativelylittle power or force is required to open and close the same.Consequently a much smaller ball and slighter connecting rod can be usedfor automatically working the valve than is ordinarily employed.

The invention further relates to means for varying the pressure of thewater upon the valve with the idea principally of reducingit.

The invention will be further described in connection with the drawings,in which Figure 1 is a view partly in elevation and partlyin section ofthe valve. Fig. 2 is aview in plan of the valve when inverted. Fig. 3 isa detail view.

The casingAof the valve is a casting, preferably of a T-shape; a is thewater inlet end of the casing, and a the outlet. The casing has thecontracted section B which extends into the water-way slightly, andwhich is provided with a screw thread I), and there is attached to thiscontracted section or partial diaphragm, apart (1 in the nature of acylinder or quill, closed atone end and open at the other.

' This cylinder or quill extends into the waterway on the inlet side anydesired distance, preferably quite a little, and there are formed one ormore holes a in it on the water inlet side of the diaphragm, andpreferably near the diaphragm, through which water may flow from thewater inlet to the cavity of this valve cylinder. The valve cylinder ispreferably enlarged at c' about its open end to form a shoulder to bearagainst the end 0 of the diaphragm and to also form the stationaryterial.

valve seat 0 against'which the movable valve Serial No. 457,063. (Nomodel.)

seat D is adapted to be brought into contact. The valve seat D ispreferably made of rubber or any suitable conformable or resilient ma-It is held wholly or in part by the sliding head or spindle d, andsurrounds the tubular section d. The tubular section extends into thecavity or bore of the valve cylinder 0. It has the open inner end 01 andit has near the valve seat D one or more holes 61 which form outletports. This tubular section slides in the cavity of the valve sleeve 0,and is of such length that its outer end moves by or past the ports 0 inthe valve cylinder when the valve is closed and closes them, and at thesame time the ports at are closed by sliding into the open end of thevalve cylinder, and the valve seat D comes into contact with the valveseat 0 The valve D, valve tube d and spindle cl are moved by a ball notshown at the outer end of the rod 6 the rod being carried by the pivotedspindle moving piece 6', which is pivoted at e and engages the spindleor head din the usual way.

To decrease the water pressure I have arranged in the water inlet a anexpansible throttle F. This preferably is made of rubber or othereXpansible material, and is represented as supported by a block f,having the Hat sides f (see Fig. 2) and the threaded sections f whichscrew into the interior thread f of the casting. The throttle may besecured to this casting, although it is not necessary that it should be,and I have represented it as attached thereto by means of a bolt f 4having alarge head f 5 to bear against the throttle piece or disk. Theshank of the bolt passes through a hole in the throttle piece andthrough ahole in the holder-f, and is held in place by a nut f.

It will be understood that there is a provision for endwise movement ofthe bolt in the holder. By the use of the nut in the first instance thediameter of the throttle piece may be increased by causing the head ofthe bolt to bear against the throttle piece with sufficient force. Afterthe valve has been connected with the pipe it is not always convenientto vary the size of the throttle piece by the nut, and to enable this tobe conveniently done without detaching the valve I have arranged at theouter end of the valve cylinder an adjusting screw f", the head of whichis in the cavity of the valve cylinder. The pointof the screw bearsagainst the head f of the bolt, and by turning the screw any desiredexpanding pressure can be brought upon the throttle F. The head of thisadjusting screw is always accessibe because the spindle or head d andvalve D and tubular section d are easily removed from the casing, itonly being necessary to remove the pivot 6 and to unscrew the cap G. Andwhen these parts have been removed the head of the adjusting screw caneasily be reached by a screw driver inserted through the open end of thevalve casing.

The valve casing has the exterior thread g at the inlet end whichreceives a coupling 9. In use the water or fluid from the supply pipe 9'enters the inlet section of the valve casing, and its pressure isreduced by means of the throttle, the fluid having to flow, through therestricted or narrow channel between the throttle and the valve casing,and this channel is narrowed or broadened according as the pressure isapplied to the throttle or removed from it. The water-way continues bymeans of the annular passage about the valve cylinder to the ports 0 andby the open end of the tube d to the escape ports d This of course isupon the supposition that the valve is open. The closing of the valveshuts the ports 0 d and brings the seats D 0 into contact.

The advantages arising from the construction herein specified are firstreduction in friction upon the sliding parts of the valve, which enablesthe valve to be operated with very little power, it being necessary touse for its operation a ball which is relatively very small.

Another advantage arises from the ease with which the water pressureupon the valve may be varied without detaching or removing the valvefrom its permanent position or any permanent fixed part from it.

I would have it understood that a throttle is principally useful withhigh pressure and that it can be dispensed with when desired.

The stationary valve seat a may be formed upon the diaphragm B, insteadof upon the valve cylinder if wished.

I would not confine the use of the cock to water closet valves, as itsorganization and mode of operation render it generally useful for manyother kinds of valves and. cooks.

Having thus fully described my invention, I claim and desire to secureby Letters Patent of the United States 1. A cock for water service boxesand other uses comprising a casing having a water way a, an outlet a,the interior threaded section 12 adjacent to the outlet and the valvehead holding extension, the tube 0 having a screw thread to engage thethreaded section b and a cylindrical section extending into the waterway a and also having an enlargement c, the valve seat 0 and one or moreports 0, and the valve head (I having the valve D and the section dprovided with one or more ports (Z as and for the purposes described.

2. The valve casing A and an expansible throttle F held in its water wayand adapted to vary the size thereof, as and for the purposes described.

3. The combination in a cock ot the throttle support f, the throttle F,and the throttle regulating head f substantially as described.

4. The arrangement in a cock of the character specified of theexpansible throttle F and its adjusting screw f carried by a support andhaving its head in position to be reached by a screw driver or operatingdevice through the open end of the cock, as and for the purposesdescribed.

5. In a cock of the character specified, the valve casing, the valvecylinder 0 attached to the casing to extend into the water way, anadjustable throttle in the water way and a throttle adjusting screwsupported by said valve cylinder, as and for the purposes described.

4 WILLIAM F. LILL.

Witnesses:

F. F. RAYMOND, 26, J M. DOLAN.

